tailieunhanh - Screening for identification of resistance sources of tomato against tomato leaf curl virus (ToLCV) from segregating population and private sector hybrids under natural disease incidence

Tomato leaf curl virus (ToLCV) is one of the most serious plant viral pathogen of tomatoes grown in tropical and subtropical regions of the world. The virus is a monopartite and bipartite Gemini virus, transmitted by the tobacco whitefly, Bemisia tabaci (Gennadius). In an effort to identify the resistance source/s against this disease, 47 tomato segregating population from F1 generation from the cross between resistant parents (DMT2 X COHBT24) and 37 private sector commercial tomato hybrids were screened for resistance against ToLCV during summer season (2017) under natural disease incidence condition. Tomato seedlings grown on portrays (28 days old) were transplanted on to the main field. The observations on per cent incidence (PI), per cent disease index (PDI) were recorded at 30 days interval after transplanting (60 and 90 DAS) and Area under Disease Progress Curve (AUPDC) values were calculated. Among the population screened, no visual symptoms of ToLCV infection were observed in COHBTTF1/11-4, whereas maximum ToLCVD severity (45 PDI) was recorded in COHBTTF1/325-1 even at 90 days after transplanting (DAT). The entire population evaluated was grouped into resistant (11 Nos.), mild infection (38 Nos.) and moderate infection (35 Nos.) exclusively based on resistance reaction against ToLCV. The AUDPC values for ToLCVD ranged from 0 (COHBTTF1/11-4) to 1275 (COHBTTF1/325-1). For categorization of the tomato genotypes/hybrids into different resistance reaction groups, the AUDPC values depicting the resistance reaction over the entire period of study need to be considered in addition to PI and PDI values at a standard time of observation. | Screening for identification of resistance sources of tomato against tomato leaf curl virus (ToLCV) from segregating population and private sector hybrids under natural disease incidence

• Sinh học
• Bemisia tabaci
• Screening for identification
• Resistance sources of tomato against
• Tomato leaf curl virus
• Segregating population
• Đặc điểm hình thái của bọ phấn bemisia tabaci
• Đặc điểm hình thái pha phát dục bọ phấn B
• tabaci
• Trình tự gen COI của bọ phấn B
• Bọ phấn B
• Phân loại phân từ bọ phấn
• Tạp chí Bảo vệ thực vật
• Bọ phấn trắng Bemisia tabaci
• Diễn biến mật độ quần thể bọ phấn trắng Bemisia tabaci
• Thuốc bảo vệ thực vật
• Cây sắn (Manihot esculenta Crantz)
• Begomovirus gây bệnh khảm lá sắn
• Insecticidal sprays
• Management of thrips
• Thrips tabaci Lindeman
• Bemisia tabaci Gennadius
• BT cotton in Malwa region
• Life table
• Mortality rate
• Cassava Manihot Esculenta Crantz
• Life history of Bemisia Tabaci
• Amrasca biguttula biguttula
• Bemesia tabaci
• Selected insecticides
• Sucking insect pests
• Bemisia tabaci of okra
• nghiên cứu khoa học
• Loài Rầy Phấn Trắng
• Aleurodicus dispersus Russell
• khoa học môi trường
• báo cáo khoa học
• công nghệ sinh học
• Genetic variability
• Tomato yellow leaf curl virus
• Molecular genetics
• Restriction fragment length polymorphism
• Serangium montazerii
• Biological characteristics
• Eggplant varieties
• Host plant resistance
• Chillies Capsicum spp against whitefly
• Levels of plant resistance
• Plant resistance
• Thiamethoxam 25% WG
• Bio efficacy
• Carbofuran 3% CG against whitefly
• Bemisia tabaci (Gennadius)
• Recording lower whitefly population
• Natural enemies
• Pesticide combinations
• BC ratio
• Cotton whitefly (Bemisia tabaci
• Gennadius)
• Insecticides against population builds
• Benefit cost ratio
• Chemical insecticides
• Chemical insecticides against
• Whitefly Bemisia tabaci
• Okra abelmoschus esculentus (L ) Moench
• Comparative efficacy of some bio rational
• Yellow mosaic virus
• Tolerant and susceptible
• Biochemical changes
• Biochemical variability
• Field screening
• Mungbean Yellow Mosaic Virus
• Cercospora leaf spot
• Normal spacing and HDPS
• Cotton whitefly Bemisia tabaci
• High density planting system
• Cotton whitefly
• Conducted at RARS
• Diversity of tomato leaf curl virus
• Chaperone GroEL protein
• Virus particles
• Vigna radiata
• Certain selective insecticides against whitefly
• Bio efficacy on mungbean
• Treatments each replicated three times including
• Mycelial growth
• Sunflower whitefly Bemisia tabaci Gennadius
• Beauveria bassiana
• Combined effect of Beauveria bassiana
• Selected chemical insecticides
• Đồ án tốt nghiệp đại học
• Rệp Aphis gossypii
• Nấm Paecilomyces lilacinus
• BMC Genomics
• Invasive species
• Gene gain and loss
• Detoxification enzymes
• Bệnh vi rút khảm sắn
• Bọ phấn trắng thuốc lá Bemisia tabaci
• Bệnh vi rút sọc nâu
• Kỹ thuật chiết xuất DNA
• Quá trình chích hút dịch cây
• Bt cotton
• Different Bt
• Bt cotton hybrids against
• Aphids aphis gossypii
• Whiteflies Bemisia tabaci
• Border Crop
• Insecticides on management of whitefly
• Management of whitefly
• Khoa học nông nghiệp
• Loài côn trùng chích hút
• Nấm Paecilomyces lilacinus P2
• Quản lý bọ trĩ
• Quản lý rệp trên dưa hấu
• CÀ CHUA GHÉP
• càSolanaceae Ralstonia
• solanacearum
• dưa hấu